Last week we reported that Groupon was closing a massive $950 million funding round at an impressive $4.75 billion valuation in the wake of walking away from an acquisition offer from Google.

Groupon already closed half of that — around $500 million — from Russian firm DST, Fidelity and Morgan Stanley. Now we’ve heard from multiple sources that distinguished Silicon Valley firm Kleiner Perkins is on the verge of participating in the round as well. It’s unclear when the remainder of the round will close or who the other other participants aside from Kleiner will be.

Kleiner has recently been making aggressive moves in Silicon Valley, including a $150 million slice of Twitter’s recent $200 million funding round, doubling down on its iFund earlier this year, and its $250 million bet on social, the sFund.